---- _________ your shirts _________ cotton?---- Yes. And they are made in the US.
A.Do; made of B.Are; made of
C.Do; made from D.Are; made from
_________ pretty the dragon boats are! I am sure the race will be very exciting.
A .What; a B.How; a C.What D.How
It is said that tea was invented ____________ accident.
A.by B.on C.at D.for
Basketball has not only become a popular sports to play, ____________ it has also become a popular sport to watch.
A.if B.and C.but D.because
The computer is one of _____________ inventions in the world.
A.useful B.more useful
C.most useful D.the most useful
The earthquake happened all of ____________, but luckily no one got hurt.
A.sudden B.a sudden C.the sudden D.suddenly
